Preserving A Collection Of Old Coins Through Expert Techniques
Collecting old coins is a fascinating hobby, but it requires care to preserve their value and condition. Expert techniques ensure that your coins remain in excellent shape for years to come. Here’s how to properly care for your collection.
Handle Coins with Care
The first rule of coin preservation is to avoid touching the coin's surface with bare hands. The oils and dirt from your skin can damage the coin over time. Use cotton gloves or handling tongs when touching your coins.
Store in Proper Containers
Use acid-free holders such as 2x2 holders, capsules, or soft holders designed for coins. These prevent physical damage and shield coins from environmental factors. Avoid PVC plastic holders, as they can react with the metal and cause deterioration.
Control Temperature and Humidity
Extreme temperature changes and high humidity levels can cause oxidation, tarnishing, or corrosion. Store your coins in a climate-controlled environment with stable temperature and humidity levels (ideally between 65-70°F and 30-50% humidity).
Keep Coins Clean (But Don’t Overdo It)
Cleaning coins is a delicate matter. Cleaning can remove valuable patinas or create scratches, reducing a coin’s value. If you must clean a coin, use a soft brush or a gentle cleaning solution designed for numismatic use. Always air-dry your coins rather than using cloths.
Avoid Polishing Coins
Polishing coins can permanently damage their surfaces and devalue them. Leave the natural aging and patina intact, as it can add to the coin’s character and value.
Record and Document
Maintain detailed records of your collection, including the type, age, and condition of each coin. This information can be invaluable for insurance purposes and helps you keep track of the coins’ history.